Pre-shaped Insulating Sheet Bending Apparatus
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Solution Overview
Problem
Existing methods for forming pre-shaped insulating sheets for stator assemblies lack accuracy and flexibility, as the shape provided by traditional roller-based apparatuses is predefined and cannot be adjusted, leading to potential variations over time.
Innovation Solution
An apparatus with multiple bending stations and adjustable holding and bending mechanisms allows for precise shaping of insulating sheets from a flat sheet into Z- and S-shapes, enabling fine-tuning and adjustment of the bending process, including the use of embossings to define bending lines and independent control of bending operators for increased accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional roller-based apparatuses with pre-given profiles are used for shaping insulating sheets, then the shaping process is simple and fast, but the manufacturing precision and accuracy are limited and cannot be adjusted
Solution Approach 1:
The shaping process is divided into multiple independent bending stations (first bending station, second bending station, third bending station), each performing a specific bending operation. This segmentation allows each station to be precisely controlled independently, improving overall shaping accuracy while maintaining manageable system complexity through modular design.
Solution Approach 2:
The bending operators are made adjustable and movable rather than fixed. The first bending operators can be moved transversely with respect to the holding surface, and the second bending operators can be moved transversely with respect to the second holding surface. This dynamic capability enables real-time adjustment of bending parameters to achieve precise shaping accuracy.
2Adaptability or versatility
If fixed profile rollers are used for bending, then the device complexity is low, but the adaptability and flexibility for different shapes are limited
Solution Approach 1:
The bending operators are designed with movable capabilities allowing transverse movement with respect to holding surfaces. This dynamic design enables the same apparatus to adapt to different bending requirements and shapes without requiring fixed profile rollers, providing versatility while managing complexity through controlled motion mechanisms.
Solution Approach 2:
The bending process parameters such as bending position, bending angle, and bending force can be adjusted independently at each bending station. This parameter adjustability allows the apparatus to accommodate different insulating sheet shapes and specifications, enhancing adaptability without requiring complete redesign of the device.
3Manufacturing precision
If multiple bending stations with independent control are implemented, then the manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
The complex shaping process is segmented into three distinct bending stations, each with specific functions. The first bending station performs initial bending, the second bending station performs intermediate bending with transverse movement capability, and the third bending station performs final bending. This segmentation distributes the complexity across modular units while achieving high precision through cumulative controlled operations.
Solution Approach 2:
Each bending station performs preliminary actions that prepare the insulating sheet for subsequent bending operations. The holding mechanisms securely clamp the sheet before each bending operation, and the embossings predefine bending lines. This preliminary preparation ensures that each subsequent bending operation builds upon a stable, precisely positioned foundation, maintaining high accuracy despite multiple stations.
Data Source
AI summary
An apparatus for forming pre-shaped insulating sheets comprises a first bending station and a second bending station. The first bending station is used for bending a flat sheet of insulating material into a Z-shaped sheet (5). The second bending station is used for bending the Z-shaped sheet into an S-shape. The first and second bending stations comprise pairs of first (13a, 13b) and second bending operators for creating bending movements.